Hobby Boiler Injector by JC of the UK. Supply lines are 1/4" and the Boiler Supply line is 3/16". Operating range is 75 to 100 Psig and can deliver up to 60 ounces a minute. Only $125.50 each plus carriage and tax where applicable. $4.00 carriage in the USA. Unfortunately John Cashmore injectors are no longer available. Please contact us if off shore or over seas. All Service Men are welcome.